Specifications:

Dimensions: 40mm x 40mm x 11mm
Material: Aluminum
Color: Black Tone
 

Features:

Reduce the risk of hardware failure due to overheating
Made of high quality Aluminum, good thermal conductivity
The fins increase the area of the board and thus provide for greater heat transfer.
Widely used for computer, Power Transistor, Fet, IC, Power Amplifier, Voltage Regulator, Mosfet, Scr etc.